Planter



C. H. WHITE PLANTER Nov. 18,1941.

2 Sheets-Sheet 1 Original Filed Aug. 29. 1927' .VA. w E Q R NAM Nov. 18,1941 c. H. WHIVTEY Original Filed Aug. '29, 1927 2 Sheets-Sheet 2-Reissued Nov. 18, 1941 PLANTER Charles H. White, Moline, ILL, assignorto Deere & Company, Molina, Ill., a corporation of Illinois Original No.1,807,814, dated June 2, 1931, Serial No. 216,083, August 29, 1927.Application for reissue July 31, 1941, Serial No. 404,949

27 Claims.

My invention relates to planters and has particular reference toimprovements in implements of the corn planter type. Such type ofplanting implement usually comprises a two-wheeled sulky frame on whichthe runners, runner frame, seed hoppers and check mechanism, are allsupported forwardly of the transverse axis of the wheels. In implementsof this general description, the combined weight of the runners, runnerframes, etc., tends to tilt the front end of the implement downwardlyaround the transverse axis of the wheels, and this transmits aconsiderable neck yoke weight to the front end of the draft tongue. areengaging in the ground some portion of this tilting weight is bornedirectly by the furrow openers, but a considerable part of such tiltingweight is nevertheless transmitted to the end of the tongue, as neckyoke weight to be carried by the team. Obviously, when the furrowopeners are lifted from the ground, as in turning at the ends of thefield, or in transporting the implement to or from the field, all ofsuch tilting weight must be carried by the team through the neck yoke.Moreover, when attachments are added to the implement for distributingfertilizer or for sowing pea or bean seed, etc., this neckyoke weight isconsiderably increased.

Another difficulty encountered inthis general type of planting implementis that the accuracy of the planting operation is affected by variationsin the hitched height of the outer end of the tongue and b the rise andfall of this outer end in the travel of the implement. For example, inorder to secure proper positioning of the runners for accurate check-rowplanting, it is necessary that the tongue be adjusted for horses ofdifferent heights.

to the travel of the team over abrupt variations in the surface of theground, will raise or lower the furrow openers relative to the surfaceof the ground, with the result that the seed is often planted either toodeep or too shallow.

In avoiding these difficulties I have provided a forecarriage or wheeledframe for the front end of the implement, which carries all of thetilting weight above described, and which prevents the proper setting ofthe runners from being influenced by the angularity of the tongue. Oneof the principal features of the invention pertains to the manner inwhich I connect this forecarriage to the frame of the planter and to themanner in which I obtain the vertical adjustments of the runners. Inmaking vertical When the furrow openers Moreover, the rise. and fall ofthe outer ends of the pole, incidentabove referred to.

adjustments of the runners through their normal working range, i. e.,through their furrow opening range, it is desirable that the runners beraised and lowered through an approximately rectilinear path, with eachrunner and its shank remaining in approximately the same angularrelation to the surface of the ground in every adjustment. Anypronounced rocking or swinging movement of the runners at this time isobjectionable, particularly in check-row planting, where such angularmovement tends to destroy the desired registry between the button on thecheckwire and the point of deposit of the seed in the furrow. Thisdesired adjusting movement of the runners through an approximatelyrectilinear path is obtained in the present construction by pivotallyconnecting the wheeled front frame to the planter frame for relativehinge movement there-between, and by causing the front frame to move upand down bodily with respect to its wheeled support in makingadjustments of the runners, the movement of the latter following themovement of the front frame.

The invention also includes other features of improvement pertaining tothe detail construc tion of the forecarriage or wheeled front frame,which features will appear from the following description of a preferredembodiment of the invention. In the drawings illustrating suchembodiment:

Figure 1 is a side elevational view of the present planter, the adjacentside'portion thereof being broken away to illustrate different operatingparts.

Figure 21s a plan view of the implement.

Figure 3 is a longitudinal sectional view on a larger scale through theupper portion of the forecarriage. 7

Figures 4 and 5 are diagrammatic views, schematically illustrating thepositions of the frames and of the pivots when the runners are at ashallow furrow-opening depth and at a deep furrow-opening depth,respectively, and

Figure 6 is a fragmentary elevational view showing one of the check-wireguides on the caster-wheel. yoke.

Referring to Figures 1 and 2, 8 indicates the usual frame of thconventional type of planter In the present construction of three-wheelimplement, such frame corresponds to what may be termed the rear or backframe thereof. The frame 8 is usually provided with a transverselyextending axle 9 on which are journaled the wheels II, the frame 8 beingtiltable about the axis of these wheels. Extending transversely of theframe 8 is a runner frame l2 on which is supported the runners I3, theseed hoppers I4, the check-wire heads I5, and the different associateddriving mechanisms which serve to govern the feed of the seed from thehoppers l4, and the checked discharge of the seed into the seed furrows.All of such mechanism concerned with the feeding and dropping of theseed is well known, and it is not necessary to describe the same here.

The runner frame I2 comprises two parallel frame bars [2a and I2?) towhich the shank members It of the runners I3 are suitably secured. Thusthe angle of the runners I3- as wellas their vertical positions aredependent upon the position of the runner frame l2. The up wardly curvedfront end of each runner is usu-' ally braced to the frame l2 throughbrace bars- In the prior type of implement to which I V I1. havereferred, the runner frame [2 has pivotal connectionwith the main frame8, and this same construction is employed 'in the present implement,suchpivotal connection consisting.v of yoke members I8 which are rigidlysecured to the frame bars I2a and l2band to which'the main frame 8 ispivotally connected at I9. The front ends of the side bars of the mainframe 8 have pivot lugs 2| rigidly secured thereto, through which passthe pivot-pins or bolts H).

The operation of raising and lowering. the runners l3 is performedthrough an adjusting lever 22 which is usually located in frontof theoperators seat 23. The seat 23 is supportedon bars 24' and 25 risingfrom the mainframe 8, which are usually arranged to position the seat inrear of a vertical plane passing through the tilting axisof theframe;Thelever 22 is pivoted-either to one of the supporting bars ,25, or tothe-mainframe 8, as indicated by the-pivot 26,- and such lever carriesthe usual latching dog 29 adapted to engage in a notched quadrant 28,the-latching dog being releasable through the usual latch-release lever23. A bracket 3| projecting forwardly'from thelower part of the lever 22has pivotal connection at 32 with an operating link 33. The latterextends downwardly through an apertured arm 'or bracket 34- projectingrearwardly from the runner frame, where such link is provided-with a nutor stop collar 35 adapted to engage the underside of the arm or bracket34. A heavy compression spring 36 is confined on the link 33, betweenashoulder 31 on the upper end thereof, and a washer 38 which bearsagainst the upper side of the bracket arm 34. It will be seen that thelink 33-is effective to exert a positive upward pull on the runnerframe'when the lever 22 is pulled backwardly. On the other hand. whenthe lever 22' is-pushed forwardly, the link 33 is free to movedownwardly through the opening in the bracket arm 34, so that if therunners are incapable of entering the ground as the lever is beingpushed forwardly,

the spring 33 willbe compressed, until, through forward travel of theimplement, the runners have had opportunity to move down to the desireddepth adjustment when the pressure of the spring will force the bracketarm 34 down against the adjusted position of the stop 35, as determinedby the settingof the lever 22.

A heavy tension spring II has its lower end connected to a strap 42'which is pivotally connected at43 to the bar 25, and the upper end ofthe spring is connected to an eye-bolt fi l-having adjustable mountingina threaded lug 45' projecting rearwardly from the handle 22. The

tension of this spring normally tends to pull the depth adjusting leverrearwardly and thus tends to counter-balance the weight of the runners,runner frame, etc., for facilitating the operation of adjusting theposition of the runners.

The foregoing represents in general the typical construction of theplanter to which I have referred. In such type of planter the steeringtongue or pole is usually connected directly in rigid relation to therunner frame, and it will be evident that with this arrangement thetilting weight of the planter runners and planter mechanism istransmitted directly to the tongue; also that with a given depthadjustment of the runners, any rise or fall of the outer end of thetongue will cause the runners to rise or fall in their. depthadjustmentin the ground.

The .truck or forecarriage which I employ for obviating these objectionscomprises a frame 4? preferably constructed of two laterally spacedframe bars 41a and 411). As shown in, Figure 2, the front ends of suchframebars are shaped to extend substantially parallel to each other,-and rigidly secured between such parallel portions, as bythe bolts orrivets 48, is a bearing block- 49. The latter is provided with a guidebore 5i extending upwardly therethrough, this guidebore being preferablyinclined slightly to the vertical. A boss. 52 projecting upwardly fromthe block 49 increases the effective length of the guide bore. Rotatablyand slidably supported in such bore is a Wheel standard 53. The lowerend of the standard carries a yoke which is inclined rearwardly anddownwardly,v and which has a wheel 55 rotatably supported on a suitableaxle 56 extending between the ends ofthe yoke arms. By virtue of theswivel mounting of the standard 53 in the guide block 49, the wheel 55functions as. acas-te'r wheel adaptedto swing'freely to one side or theother in the steering movement of the implement.

The parallel portions of' the sidebars 41a and 41b extend forwardlybeyond the guide block 49 to provide a mounting for receiving the tongue51. A pivot pin or bolt 58 extends transversely through the frame barsandthrough the tongue, the tongue having vertical pivotal movementrelative to the frame 41 around the axis of this bolt 58. The latter is"preferably located adjacent to the front ends .of the'frame bars, with aconsiderable portion of the tongue extending rearwardly therefrombetween the frame bars for properly guiding the tongue in the frameagainst lateral movement. Wear plates 59 are suitably secured to theouter sides of the tongue for engaging with the sides'of the frame bars41a and 47b. A U- shaped bracket BI is suitably secured to the upper.side .of the tongue, adjacent to its rear end, and this bracket haslaterally projectinglipsorflanges 62 adapted'to strike theupper edges ofthe frame bars and-thereby limit the upward tilting movement'of-thetongue. Such bracket serves as a limiting. stop to prevent downwardfolding movement between the tongue and the frame 41 in the backing ofthe implement.

As shown in, Figure. 2, the frame bars 47a and 47b diverge laterallyfrom the guide block 49 to effect attachment to the runner frame atpoints spaced relatively far apart. Bracing links or bars 53 reinforcethe angle bendsof the frame bars etween the parallel portions and thediverging portions thereof. The rear ends of the diverging portions arebent into substantial parallelism and have such parallel ends rigidlybolted to the runner. frame 12 by :the bolts (Hand 65. The bolts 64,which pass through the extremity of the frame bars, have attachment tosuitable lugs or brackets carried by the runner frame. The front bolts65 pass through holes in the frame bars 41a and 41b and through holes inbrackets 61 which are fixedly secured to the runner frame. Referring toFigure 1, it will be noted that each bracket 61 has a plurality of holes68 for receiving the bolts 65. Three of such holes have been shown butit will be evident that a greater or lesser number may be provided ifdesired for a wider range of adjustment. The several holes are disposedon an arc having the rear bolt 64 as its center, and it will be evidentthat by releasing the two bolts 55 and changing their locations in theholes 58 the runner frame l2 can be tilted with respect 4 to thewheel-supported frame 41. The purpose of such adjustment is to disposethe runner l3 and its shank l6 at the proper angle when in its loweroperating positions to secure accurate registry between the buttons onthe check wire and the points of deposit of the seed.

Thefront frame 41 is arranged to have vertical translational motionrelative to its wheel support or standard 53, for securing the depthadjustments of the runners l3, and for raising the runners clear of theground when the implement is to be transported to and from the field.Such shifting or translational motion is effected through a bell cranklever 69 which has pivotal connection with the frame 41 and with thewheel standard 53. The lever has pivotal connection with the framethrough a pair of links 1|, the upper ends of which are pivotallyconnected to opposite sides of the lever 65 on the pivot pin 12, and thelower ends of which diverge and have pivotal mounting on the oppositesides of the guide block 48, upon a pivot pin 13 extending through theblock. The front end of the lever is provided with any suitablearrangement of fork arms 14 which embrace a thrust collar 15 on theupper end of the wheel standard 53, the arms 14 receiving pivot pins 16which project from diametrically opposite sides of the thrust collar.The collar bears against a shoulder 11 on the wheel standard and is heldagainst displacement from the upper end of the standard by thetransverse pin 18. It will be noted that angular movement of the lever69 is operative to raise or lower the frame 41 along the wheel standard53, without interfering with the caster wheel rotation of the standard.The link mounting of the lever on the frame 41 accommodates thefore-and-aft swinging of the lever in this angular movement. Pivotallyconnected at 15 to the lower arm of the lever is a link 8| which extendsrearwardly to the depthadjusting lever 22 where it has pivotalconnection therewith as at 82. It will hence be seen that with eachactuation of the lever 22 the bell crank lever 59 will be oscillated toraise or lower the front frame 41, and, correspondingly, the link 33will be raised or lowered for similarly moving the rear end of therunner frame l2. Figures 4 and 5 illustrate the path followed by therunners when moving between two working adjustments.

The draft of the implement is transmitted through an evener 84, which ispivotally supported on the front frame 41 and has its ends curveddownwardly to support tug hooks 85 of any suitable type. As shown inFigure 3, the evener has a swiveled mounting on the under side of theguide block 49 upon a pivot bolt 85 extending downwardl through theguide block and through the evener. An arcuate plate 81 has its endsriveted or bolted to the evener on each side of the guide block and hasits intermediate portion extending forwardly and slightly upwardly forbearing against the under side of the block in front of the wheelstandard 53. Such arcuate plate 81 relieves the pivot bolt 86 of thetwisting stresses set up in the evener, transferring such stressesthrough said plate to the guide block.

When winding up the check-wire upon the reel in this type of implement,the wire passes in close proximity to the tongue 51, and at such timesit is possible that the wire will become fouled in the wheel 55 and itsfork 54, or will become worn and damaged through striking the latter. Toavoid this I have mounted a wire guide 88 on one side of the wheel fork54, through which guide the wire passes back to the Wire reel at therear end of the implement. As shown in Figure 6, this wire guideconsists of a looped or coiled rod, having its free end separated fromthe loop or coil and extending upwardly. Any intermediate portion of thecheckwire can be easily inserted in the guide by merely slipping thesame down past the free end of the rod and into the loop. One of themounting sockets for the reel is indicated at 89, the same being drivenfrom the wheel II by a chain 9|.

Figures 4 and 5 are views in which the structure has been schematicallyillustrated to show the positions of the frames and of the pivots in thedifferent working positions of the runners. It will be noted from Figure4 that in lifting the furrow openers through actuation of the lever 22,the rear frame 8 is caused to tilt backwardly around its wheel axis 9,and the front frame 41 is caused to shift bodily upwards along the wheelstandard 53. In the resulting hinge movement between the front and rearframes, the runners will partake of the motion of the front frame,moving upwardly with a rectilinear motion, or with the runner unitsmaintaining the same angular relation to the surface of the ground. Whenmoving the runners downwardly, represented by the position of the partsin Figure 5, the downward movement of the link 33 will permit the rearend of the front frame to move downwardly correspondingly with thedownward movement of the front part of such frame along the standard 53.Hence, in their lower positions, represented in Figure 5, the runnersare also in the same angular relation to the surface of the ground, asin their upper positions. The runners follow this characteristicrectilinear path in moving between each of their working adjustments.Thus at no point in the working range of adjustments are the runnersinclined at an angle which would impair the accuracy of the check-rowregistration between the buttons on the check-wire and the points ofdeposit of the seed.

It will be obvious from the foregoing that the caster wheel 55 supportsall of the tilting weight of the runners, runner frame, etc., so thatnone of this weight is transmitted to the neck yoke of the team.Moreover, the caster wheel supports the rear end of the tongue 51 andalso relieves the team of this neck-yoke weight. It will also be obviousthat the travel of the runners will be entirely independent of anychange in the vermovement,a furrow opener supported by' one" of saidframes, and means including a .lever pivoted. on? the: otherofisaidframes and operatively connected with said one'frame for raisingand lowering said latter frameand said furrow opener :through .anapproximately rectilinear path in adjusting the working depth of thefurrow opener.

2. Inan agriculturalimplement,.the combinationxof two frames, eachwheel'supported, means pivotallyconnecting said frames togetherat apoint rearwardly of the wheel supporting the forward frame, a furrowopener carried by one of saidframes, and means including a lever carriedon one frame and link-connected at spaced points with the' other framefor" raising and lowering one of said frames through'a rectilinear paththereby raising and lowering said furrow opener.

3. -In.an-agricultural implement, the combina tion of front and rearframes, a supporting wheel for each-frame, the supporting wheel for saidfront'frame having lateral swinging movement, atongue-pivotedtosaid'front frame, means pivotally-connecting said frames together, afurrow opener carried by said front frame, and means including a levermounted on the rear frame and connected with the front frame for raisingand lowering said front frame bodilyrelative to its supporting wheel andthereby raising and lowering said furrow opener.

4. In a planter, the combination of'two frames, aseparatesupporting-wheel for each frame, means pivotally connectingsaidframcs-together, afurrow opener carried by on'e of said-frames,

and-means includinga levermounted forpivotal" movement on the otherframe rearwardlyof said one frame for adjusting theworking depth of.saidfurrow opener by shifting one of said frames bodily with rectilinearmovement relative. to itswheel axis and tilting the-other of said framesrelative to its wheel axis; 1

5. In aplanter, thecombination of front and rear. frames, wheelmeanssupporting each of said frames, one of said wheels having lateralsteering movement, a "tongue connected to said front frame, meanspivotally connecting said frames ltogetheron an axis disposedintermediate the axes of said vfront and rear wheels,- planter runnersand seed hoppers, the'latter being ar ranged toldischarge-into thefurrows opened by saidplanter-runnera-carriedby said front frame,

and .means forraising and lowering said front frame with: a.substantially vertical rectilinear motion relativeto itssupporting wheelfor adjusting the furrow opening-depth of said runners.

6. In an agriculturalimplement, the combinationofaframe supported-on twoaxially aligned wheels a-second frame pivotally connected to saidfirstframe, a wheel standard on which said second. frame is supported forvertical translationalmovement, a furrow opener carried by said secondframe,- and lever means having pivotal connection withsaidsecondframetand with said wheel standard for raising and lowering saidsecond frame.

'7. In anagricultural implement, the combination of front and rearframes, axially aligned wheels supporting said rear frame, a wheelstandard on which said front frame is supported for verticaltranslational movement, means pivotally connecting said-frames togetherintermediate the axes of the front and rear wheels, a furrowopenercarried by said front frame, a lever pivotally connected with said Wheelstandard and with said front frame, for raising and lowering the latterrelative to said standard, a link-connected with the rear portion ofsaid front frame, and a depth-adjusting lever mounted on one of saidframes and having operative connection with said lever and said link.

8. In an agricultural implement, the combination of a rear frame, a pairof axially aligned wheels on which said frame is supported for tiltingmovement, a front frame, a caster wheel standard on which said frontframe is slidably supported, means pivotally connecting said ;framestogether intermediate the axes of the front and rear wheels, a furrowopener carried by said front frame, a .bell crank lever pivotallyconnected with said front frame and said standard for raising andlowering said front frame,

.a link operatively connected with the rear portion of said front frame,and a depth-adjusting lever pivotally supported on said rear frame andoperatively connected with said bell crank lever and with said link.

9. In a. planter, the, combination of a rear frame, a pair of axiallyaligned wheels on which said frame is tiltably supported, a front frame,a runner supporting frame rigidlysecuredto the rear portion of. saidfront frame,.means pivotally connecting said runner frame to said rearframe, a caster wheel having an upwardly extending standard, guide meanson said front frame engaging over said standard, a tongue connected tosaidv front frame, a swinging link ,pivotally mounted on said frontframe, a bell crank. lever supported on said link, a thrust collarconnecting one arm of said bell crank lever with said standard, arearwardly extend-.

ing link connected to the other arm of said bell ,crank lever, adepth-adjusting lever mounted for latching engagement on said rearframe, said rearwardly extending link being operatively connected.therewith, a link operatively connected between said depth-adjustinglever and said runner frame for positively lifting the latter frame, anda spring on said last named link for resiliently pressing said runnerframe down-- wardly to the depth adjustment determined by saiddepth-adjusting lever.

10. In a planter, the combination of a front frame, a rear frame and arunner frame, front and rear wheels for said front and rear frames,means connecting said front and rear frames together for verticalpivotal movement, means adjustably securing said runner frame to saidfrontframe whereby said latter frames can be adjusted angularly withrespect to each other, a runner carried by saidrunner frame, and meansfor raising and lowering said front frame bodily relative to said frontwheel for vertically adjusting said runner.

11. In a planter, the combination of a rear frame, a pair of axiallyalined wheels on which said frame is tiltably supported, a front frame,a runner supporting frame rigidly secured to the ing one arm of saidbell crank lever with said standard, a rearwardly extending linkconnected to the other arm of said bell crank lever, a depthadjustinglever mounted for latching engagement on said rear frame, saidrearwardly extending link being operatively connected therewith, and

a link operatively connected between said depthadjusting lever and saidrunner frame.

12. In a planter, the combination of a rear frame, a pair of axiallyalined wheels on which said frame is tiltably supported, a front frame,a runner supporting frame rigidly secured to the rear portion of saidfront frame, means pivotally connecting said runner frame with said rearframe, a caster wheel having an upwardly extending standard, guide meanson said front frame engaging over such standard, a tongue pivotallyconnected to said front frame, a bell crank lever pivotally supported onsaid front frame, means connecting one arm of said bell crank lever withsaid standard, a rearwardly extending link connected to the other arm ofsaid bell crank lever, a depth-adjusting lever mounted for latchingengagement on said rear frame, said rearwardly extending link beingoperatively connected therewith, and a link operatively connectedbetween said depth-adjusting lever and said runner frame.

13. In a planter, the combination of a rear frame, a pair of axiallyalined wheels on which said frame is tiltably supported, a front frame,a runner supporting frame, means adjustably securing said runnersupporting frame to said front frame whereby said latter frames can beadjusted angularly in a vertical direction with respect to each other,means pivotally connecting said front andvrear frames together, a casterwheel having an upwardly extending standard, guide means on said frontframe engaging over said standard, a tongue pivotally connected to saidfront frame, a bell crank lever pivotally mounted on said front frame,means connecting one arm of said bell crank lever with said standard, arearwardly extending link connected to the other arm of said bell cranklever, a depth-adjusting lever mounted for latching engagement on saidrear frame, said rearwardly extending link being operatively connectedtherewith, and a link operatively connected between said depth adjustinglever and said runner frame.

14. An agricultural implement comprising, in combination, two framespivotally connected together, soil working means carried by one of saidframes, a wheel and wheel standard slidably supported by one of saidframes, wheels supporting the other of said frames, and means forraising and lowering said one frame relative, to said wheels through arectilinear path.

15. An agricultural implement comprising, in combination, two namespivotaly connected together, soil working means carried by one of saidframes, means providing a vertical journal and mounted on said oneframe, a wheel standard slidably supported in said journal means, awheel near the lower end of the wheel standard, wheels supporting theother of said frames, and means for raising and lowering said one framerelative to said wheel standard.

16. An agricultural implement comprising, in combination, two framespivotally connected together, soil working means carried by one of saidframes, means providing a vertical journal and mounted on said one framenear the forward end thereof, a wheel standard slidable therein andhaving a supporting wheel, wheels supporting the other of said frames,and means for raising and lowering said one frame relative to the wheelstandard and said other frame and including a lever pivoted on one ofsaid frames near the pivot axis of the frames and having a linkconnection to the other frame, and means actuable by said lever toeffect relative movement between said last mentioned other frame andsaid wheel standard.

17. A planter comprising, in combination, two frames pivotally connectedtogether, one being connected at its rear end to the other, wheel meanssupporting each of said frames at points removed from the point of theirpivotal connection, one of said frames being supported for generallyvertical translational movement on the associated wheel means, and meansoperable to adjust the angular relationship between said pivoted framesand to adjust the position of said one frame relative to the associatedwheel means by moving said one frame generally vertically in arectilinear path, and a seed-receiving planter runner carried by saidone frame and raised rectilinearly with the latter into and out ofengagement with the ground.

18. In an agricultural implement, the combination of a seat frame and arunner frame, each wheel supported, means connecting said frames forrelative pivotal movement, a furrow opener supported by said runnerframe, and means including a lever pivoted on said seat frame andoperatively connected at generally longitudinally spaced points to therunner frame for raising and lowering said latter frame and said furrowopener through an approximately rectilinear path in adjusting theworking depth of the furrow opener.

19. In an agricultural implement, the combination of a seat frame and arunner frame, each wheel supported, means connecting said frames forrelative pivotal movement, a furrow opener supported by said runnerframe, a hand lever pivotally mounted on said seat frame, an arm on thelever, a generally downwardy extending link connecting the arm with therear portion of said runner frame, and means connecting the lever withanother portion of the runner frame for raising and lowering said latterframe and said furrow opener through an approximately rectilinear pathin adjusting the working depth of the furrow opener.

20. In an agricultural implement, the combination of a seat frame and arunner frame, each wheel supported, means connecting said frames forrelative pivotal movement, a furrow opener supported by said runnerframe, a hand lever pivotally mounted on said seat frame, a first linkextending generally downwardly and connecting the lever with the rearportion of the runner frame, means for raising and lowering the runnerframe relative to its supporting wheel means, and a second linkextending from said means to said lever, whereby operation of the latterraises and lowers the runner frame and said furrow opener through anapproximately rectifurrow opener.

21. In an agricultural implement, the combination of a seat frame and arunner frame, a caster wheel connected with said runner frame so thatthe latter is capable of generally vertical movement relative to saidcaster wheel, wheel and axle means connected with the seat frame, meansconnecting said frames for relative pivotal movement, a furrow openersupported by said runner frame, a hand lever pivotally mounted on saidseat frame, a second lever connected with said caster wheel means andsaid runner frame, a first link extending from said hand lever to saidsecond lever, and a second link extending from said hand lever to therear portion of said runner frame, whereby actuation of said hand leverraises and lowers said runner frame and said furrow opener through anapproximately rectilinear path in adjusting the working depth of thefurrow opener.

22. In an agricultural implement, the combination of a seat framesupported on two axially aligned wheels, a runner frame pivotallyconnected to said seat frame, a wheel standard connected with the runnerframe so that the latter is capable of generally vertical translationalmovement relative to said wheel standard, a furrow opener carried bysaid runner frame, a hand lever fulcrumed on said seat frame, a secondlever pivotally connected at an intermediate point with said runnerframe and having one end connected with said wheel standard, a linkconnecting the other end of said second lever with said hand lever, anda second link connecting said hand lever with the rear portion of saidrunner frame, whereby actuation of said hand lever raises and lowerssaid runner frame and said furrow opener through an approximatelyrectilinear path in adjustingthe working depth of, the furrow opener.

23. In an agricultural implement, the combination of front and rearframes, axially aligned wheels supporting said rear frame, a wheel standard on which said front frame is supported for vertical translationalmovement, means pivotally connecting. said frames together intermediatethe axes of the front and rear wheels, 2. furrow opener carried by saidfront frame, a lever pivotally connected wtih said wheel standard andwith said front frame for raising and lowering the latter relative tosaid standard, a link connected with the rear portion of said frontframe, a depth adjusting lever mounted on said rear frame rearwardly ofsaid pivotal connecting means between said frames and having an armconnected with said link, and link means connecting said depth-adjustinglever with said first-mentioned lever.

24. An agricultural implement comprising a seat frame comprisinginterconnected generally longitudinal and transverse frame bars, atranslinear path in adjusting the working depth of the verse axlejournaled on the intermediate portion of the seat frame, a tool framehaving furrow opening means, means connecting-said frames for relativepivotal movement, and means including a lever pivoted on said seat frameand operatively connected at generally longitudinally spaced points tothe tool frame for raising and lowering said latter frame and saidfurrolw opener through an approximately rectilinear path in adjustingthe working depth of the furrow opener.

25. In an agricultural implement,-the combination of a seat frame and arunner frame, each wheel supported, means connecting said frames forrelative pivotal movement, a furrow opener supported by said runnerframe, a depth adjusting lever pivoted on said seat frame, means servingas a bracket extending rearwardly from saidrunner frame, a linkextending generally downwardly from said lever to said bracket means forraising the rear portion of said runner frame, and means extending fromsaid lever to the wheel means of said runner frame for raising the frontportion of the latter when the rear portion is raised.

26. An agricultural implement comprising a front frame, supporting wheelmeans therefor, a tool frame adjustably connected with said front frame,a rear frame, supporting wheels. for the rear frame, means pivotallyconnecting said rear frame and toolframe for relative movement about atransverse axis for raising and lowering said tool frame in response totilting movement of the rear frame about the axis of its supportingwheels, and means connected between the front frame and its supportingwheel means and with said rear frame for raising said tool frame with asubstantially vertical movement.

27. An agricultural implement comprising, in combination, two framespivotally connected together, one being connected at its rear end to theother, wheel means supporting each of said frames at points removed fromthe point of their pivotal connection, one of said wheel means beingmounted so that the frame carried thereby is movable vertically relativeto said one wheel means, means serving as a lever connected between saidone wheel means and the associated frame, and a depth adjusting leverpivoted on the rear frame and having two link connections with the otherframe and said one wheel means, said link connections being arrangedwhereby said depth adjusting lever is operable to adjust the angularrelationship between said pivoted frames and to adjust the position,relative to said one wheel means, of the frame that is carried by saidone wheel means so that one of said frames moves vertically in arectilinear path.

CHARLES'I-I. WHITE.

